it’s the 3rd one. so.. 5/8
Answer:
a = -
, b = - 
Step-by-step explanation:
To obtain the required form use the method of completing the square
add/ subtract ( half the coefficient of the x- term)² to x² - 9x
y = x² + 2(-
)x +
-
+ 14
= (x -
)² -
+ 
= (x -
)²-
← in the form (x + a)² + b
with a = -
and b = - 
Answer:
14 ft²
Step-by-step explanation:
To find the area of a rectangle you multiply the length and width. Sense the length is 10 feet but 3 feet was removed it is now 7 feet. Now you multiply that 7 feet by the width of 2 feet to get
7×2=
Area= 14 ft²
Answer:

Step-by-step explanation:
There are 30 students in a math class.
Only 8 students submitted their homework.
So those did not submit the homework were 30 - 8 = 22
The fraction of the students who did not submit the homework were
= 
Check the picture below.
let's notice that the red triangle is a 30-60-90 triangle, and the green one is a 45-45-90 triangle.